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Analysis
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max time kernel
140s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
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submitted
30/09/2024, 09:24
General
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Target
efskey.exe
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Size
194KB
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MD5
5aed2dc2ffa22134e8204301dfb7bf12
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SHA1
6b1c81390c18739849ca105c8d45a1d305094d46
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SHA256
ade854f456f8bd05aeaed87de207caaa84b5ba457ad1dcfe902d252478564c6a
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SHA512
f794567e3d06e2e39cb70ba793a8871dd85fa72e542ab7775b49f2053ccf6121d2a909f3a13a9182ee9553fe873127af2cbd0b808d07d0ba87694131d76579dc
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SSDEEP
6144:qU9rVJ56cLxGnl8JTtE6xNPOTSE2Cy/rcK:VVJnLxYOtrxsG
Malware Config
Signatures
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Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
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UPX packed file 4 IoCs
Detects executables packed with UPX/modified UPX open source packer.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Suspicious use of SetWindowsHookEx 2 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\efskey.exe"C:\Users\Admin\AppData\Local\Temp\efskey.exe"1⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
480KB
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Filesize
2.8MB
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Filesize
480KB
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Filesize
2.8MB